Momentary black screen when playing PUBG

[Mephisto]

I am experiencing an intermittent problem when playing PUBG. From time to time, the monitor screen goes black for five seconds or so, then comes back on as if nothing has heppened. the system doesn't crash and there are no other issues. The graphics drivers are all up tom date and there are no temperature issues with my rig. I have just replacved trhe DP cable after a recommendation from an old thread, but the issue is still there. Specs are as follows:
Gigabyte Aorus Z370 Ultra Gaming C-F motherboard
Two 1Tb Western Digital Black PCIe NVMe SSDs (one for Windows and programs and one for games)
2Tb HDD RAID volume for file storage
Intel i7 8700K cpu,
AMD Radeon RX6700XT Eagle 12GB gpu (Gigabyte)
32 GB DDR4 RAM @ 1333 MHz
Acer KG271U (2560x1440@144Hz) Monitor connected with the Acer-supplied DP cable.
Corsair 750w PSU
No components are overclocked. CPU and GPU both run under maximum load well within acceptable temperature ranges (CPU cooler is an all-in-one liquid cooler by Corsair). The GPU drivers are up to date (as are all, other drivers and firmware) and the system never crashes, so no BSOD ever. Just the annoying black screen for a few seconds every so often while playing PUBG. Having read an earlier thread on this subject, I have now installed a replacement after-market 1.5m DP cable. However, the problem persists, albeit somewhat less frequently. If anyone else has any insights or experience of this issue, I would be very pleased to read about them.

[_I_]

try another display, and/or dp cable

if you can narrow it to the display, it may be a bad backlight led
(backlight will turn off til the led cools and turn back on again, with no monitor logo or other symptoms)

try turning down brightness or backlight to 75% using the monitors osd menu to see if that fixes it

[Andrius227]

You sure the cable is plugged in fully? It may sound stupid but i actually had that happen.

It took me years to notice that the dp cable has a locking mechanism when fully plugged in, but a part of my pc case was blocking it so it didnt go in fully and didnt lock and i had black screens…

One time i noticed that my gpu wasnt perfectly level. So i loosened the screws that hold the gpu, lifted the gpu up a little and tightened the screws again. The case was no longer blocking the dp cable and it could be fully plugged in and locked into place.

[C1REX]

It sounds like a faulty or slow cable.
I had the same with _few_ HDMI cables that couldn’t handle the bandwidth despite advertised hdmi 2.1 specs and fake certificate.

Can be also a driver issue. Use amd cleanup tool and then amd auto driver tool to reinstall it.

Also update motherboard drivers. Easy to forget to keep them updated.

[Pocahawtness]

That replacement cable. Is it VESA certified? If not then I would send it back and get a VESA certified cable.

[Mephisto]

Thanks for all the replies folks. I installed the replacement 8K DP 1.4 cable and the issue recurred once only very early on and hasn't come back since, so maybe the cable was the issue. The cable is securely plugged in both ends (the new one doesn't have a locking mechanism). I hadn't heard of VESA certification, so I will look into that and if the problem recurs I will also experiement with lowering the brightness/backlight levels on the display as suggested. However, for now at least, I seem to be blackout free

[_I_]

ega, cga, vga, (even the old bnc component), dvi and dp all have locking methods for the connectors

the dp clips are small and easy to miss if you dont look too hard, but its a lever to squeeze to release the connector

[Andrius227]

Yeah i think they should all have locking mechanism. Have a close look around the dp port to see if anything is in the way. Most pc cases have narrow strips of metal separating the pcie slots and they often get in the way.